CN206429285U - A kind of pipe-line mixer of SCR system - Google Patents
A kind of pipe-line mixer of SCR system Download PDFInfo
- Publication number
- CN206429285U CN206429285U CN201720029463.XU CN201720029463U CN206429285U CN 206429285 U CN206429285 U CN 206429285U CN 201720029463 U CN201720029463 U CN 201720029463U CN 206429285 U CN206429285 U CN 206429285U
- Authority
- CN
- China
- Prior art keywords
- substrate
- mixing tube
- blade
- pipe
- scr system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of pipe-line mixer of SCR system, it is related to engine exhaust aftertreatment system field, including by mixing tube, the blender of blade assembly and nozzle composition in the mixing tube, the nozzle is arranged on mixing tube and in the front end of blade assembly, the end of nozzle is a bending tube, the outlet direction of bending tube is consistent with off-gas flows direction, the blade assembly includes the substrate that two pieces of right-angled intersections are fixed in mixing tube, the plane bearing of trend of substrate is axially consistent with mixing tube, on every piece of substrate several blades are alternately provided with by starting point of right-angled intersection point, blade on every piece of substrate is with corresponding substrate into an inclination angle for being more than 90 °, and the adjacent blade of any two of which is located at the both sides of substrate, the application provides a kind of simple in construction, urea liquid and motor exhaust good mixing effect can be made, both the crystallization of urea in discharge duct had been reduced, the pipe-line mixer of the SCR system of very big pressure drop will not be produced again.
Description
Technical field
The utility model is related to engine exhaust aftertreatment system field, and in particular to a kind of pipeline mixing of SCR system
Device.
Background technology
Current application of the pipe-line mixer on exhaust post-treatment apparatus of engine is more and more extensive, and its effect is to start
The tail gas of machine before the reative cell equipped with catalyst is entered, is sufficiently mixed with urea liquid, makes air-flow even into anti-
Room is answered, reaction efficiency is improved, reduction NO is now had becomeXA kind of development that discharge, reduction urea liquid are crystallized in blast pipe
Trend；But at present using exhaust pipe inspection is axially perpendicular to more than engine SCR system, such urea liquid is easier to bump against
Tube wall formation accumulation is vented, is unfavorable for the mixing of urea liquid and tail gas, easily forms urea crystals, in addition cloth in SCR system
Put blender generally to contradict with reduction exhaust resistance, it is more that blender is arranged, the exhaust back pressure of gas extraction system is bigger, phase
Should ground engine power consume it is also more, and during the mixing efficiency of the tail gas of engine and urea liquid is whole SCR system
A very important part, if not arranging blender, does not have and NO is greatly decreasedXThe purpose of discharge.
Utility model content
For problem above, the application provides a kind of simple in construction, can make urea liquid and motor exhaust mixed effect
It is good, the crystallization of urea in discharge duct had both been reduced, the pipe-line mixer of the SCR system of very big pressure drop will not be produced again, its skill
Art scheme is as follows：
A kind of pipe-line mixer of SCR system, including the blade assembly by mixing tube, in the mixing tube and spray
The blender of mouth composition, the nozzle is arranged on mixing tube and in the front end of blade assembly, the end of nozzle is a bending tube,
The outlet direction of bending tube is consistent with off-gas flows direction, and the blade assembly is fixed in mixing tube including two pieces of right-angled intersections
Substrate, the plane bearing of trend of substrate is axially consistent with mixing tube, is handed over using right-angled intersection point as starting point on every piece of substrate
For provided with several blades, the blade on every piece of substrate is more than 90 ° of inclination angle with corresponding substrate into one, and wherein appoints
Two adjacent blades of meaning are located at the both sides of substrate.
Further, the blade on described every piece substrate is rectangle, and its quantity is 4.
Further, the inclination angle between the blade on described every piece substrate and corresponding substrate is 135 °.
Further, the two ends of the mixing tube respectively by the reative cell of the discharge duct and rear end of flange and front end or
Discharge duct is connected.In the two ends adpting flange of mixing tube, it can be connected by removably with discharge duct, reative cell.
Further, the blade assembly is welded in mixing tube, and the upstream in mixing tube.
Further, the outlet of the bending tube is overlapped with mixing tube axis line.
According to above-mentioned technical proposal, direction and the off-gas flows direction one of nozzles spray urea liquid of the present utility model
Cause, flow-disturbing is formed on the axis of sprinkling urea liquid, reduce urea liquid in the crystallization of discharge duct wall, also make urea molten
Liquid is more easy to mix with waste gas, while urea liquid is after nozzle penetrating mixing tube converges with motor exhaust, air-flow passes through blade
On component during the blade of all directions, strong flow-disturbing can be formed in blade surface so that the air-flow at blade is quickly mixed, and leaf
The blade of all directions plays the role of to disperse in air-flow on piece component, and air-flow, which passes through to be formed after blade, to be vortexed so that engines tail
Gas is sufficiently mixed before entering in the reaction chamber with urea liquid, so that the reaction for improving mixed airflow in reative cell is imitated
Rate, will not produce very big pressure drop again.
Brief description of the drawings
The utility model is described in further detail below by embodiment combination accompanying drawing.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the mixer structure schematic diagram in the utility model（Do not draw nozzle）；
Fig. 3 is Fig. 2 side view.
Wherein, 1, blender；11st, mixing tube；12nd, blade assembly；121st, substrate；122nd, blade；13rd, nozzle；131st, roll over
Bend pipe；2nd, flange；3rd, reative cell.
Embodiment
The utility model is described in further detail below by embodiment combination accompanying drawing.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of pipe-line mixer of SCR system, including by mixing tube 11, installed in described mixed
The blender 1 that blade assembly 12 and nozzle 13 in pipe 11 are constituted is closed, the nozzle 13 is arranged on mixing tube 11 and in blade
The front end of component 12, the end of nozzle 13 is a bending tube 131, and the outlet direction of bending tube 131 is consistent with off-gas flows direction
And the outlet of bending tube 131 is overlapped with the axial line of mixing tube 11, the blade assembly 12 is fixed on mixed including two pieces of right-angled intersections
The substrate 121 in pipe 11 is closed, the plane bearing of trend of substrate 121 is axially consistent with mixing tube 11, with cross on every piece of substrate 121
Crosspoint is 4 blades 122 and corresponding base that starting point is alternately provided with 4 rectangle shaped blades 122, every piece of substrate 121
Piece 121 is into one 135 ° of inclination angle, and the adjacent blade 122 of any two of which is located at the both sides of substrate 121.
Wherein, the blade assembly 12 in the utility model is welded in mixing tube 11, and the upstream in mixing tube 11.
In addition, the two ends of mixing tube 11 pass through flange 2 and the discharge duct of front end respectively（Do not show in figure）It is anti-with rear end
Answer room 3 or discharge duct to be connected, thus can be connected by removably with discharge duct, reative cell 3.
Operation principle of the present utility model：
Nozzle 13 of the present utility model axially sprays urea liquid along mixing tube 11, and urea liquid is sprayed into from nozzle 13 and mixed
After pipe 11 and motor exhaust converge, air-flow is by blade assembly 12 during the blade 122 of all directions, on the surface of blade 122
Strong flow-disturbing can be formed so that the air-flow at blade 122 is quickly mixed, and there be the blade 122 of all directions on blade assembly 12
By the scattered effect of air-flow, air-flow, which passes through to be formed after blade 122, to be vortexed so that motor exhaust is entering reaction with urea liquid
Sufficiently mixed before room 3, so as to improve reaction efficiency of the mixed airflow in reative cell 3.
Use above specific case is illustrated to the utility model, is only intended to help and is understood the utility model, and
Not to limit the utility model.For the utility model person of ordinary skill in the field, think according to of the present utility model
Think, some simple deductions, deformation can also be made or replaced.
Claims (6)
1. a kind of pipe-line mixer of SCR system, it is characterised in that including the leaf by mixing tube, in the mixing tube
The blender of piece component and nozzle composition, the nozzle is arranged on mixing tube and in the front end of blade assembly, the end of nozzle
For a bending tube, the outlet of bending tube is towards consistent with off-gas flows direction, and it is solid that the blade assembly includes two pieces of right-angled intersections
The substrate in mixing tube is scheduled on, the plane bearing of trend of substrate is axially consistent with mixing tube, with right-angled intersection point on every piece of substrate
Replace the blade being provided with several blades, every piece of substrate with corresponding substrate into inclining more than 90 ° for starting point
Oblique angle, and the adjacent blade of any two of which is located at the both sides of substrate.
2. a kind of pipe-line mixer of SCR system as claimed in claim 1, it is characterised in that on every piece of described substrate
Blade is rectangle, and its quantity is 4.
3. a kind of pipe-line mixer of SCR system as claimed in claim 2, it is characterised in that on every piece of described substrate
Inclination angle between blade and corresponding substrate is 135 °.
4. a kind of pipe-line mixer of SCR system as described in claim 1 or 3, it is characterised in that the two ends of the mixing tube
It is connected respectively by flange with the discharge duct of front end and the reative cell of rear end or discharge duct.
5. a kind of pipe-line mixer of SCR system as claimed in claim 4, it is characterised in that the blade assembly is welded on
In mixing tube, and the upstream in mixing tube.
6. a kind of pipe-line mixer of SCR system as claimed in claim 5, it is characterised in that the outlet of the bending tube with
Tube axis line is mixed to overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720029463.XU CN206429285U (en) | 2017-01-11 | 2017-01-11 | A kind of pipe-line mixer of SCR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720029463.XU CN206429285U (en) | 2017-01-11 | 2017-01-11 | A kind of pipe-line mixer of SCR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429285U true CN206429285U (en) | 2017-08-22 |
Family
ID=59584906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720029463.XU Active CN206429285U (en) | 2017-01-11 | 2017-01-11 | A kind of pipe-line mixer of SCR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979803A (en) * | 2018-07-25 | 2018-12-11 | 武汉水草能源科技研发中心(有限合伙) | The method and device of liquid and gas mixing |
-
2017
- 2017-01-11 CN CN201720029463.XU patent/CN206429285U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979803A (en) * | 2018-07-25 | 2018-12-11 | 武汉水草能源科技研发中心(有限合伙) | The method and device of liquid and gas mixing |
| CN108979803B (en) * | 2018-07-25 | 2023-07-25 | 武汉水草能源科技研发中心(有限合伙) | Method and device for mixing liquid and gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8615984B2 (en) | Device for the distribution of flowable additives in exhaust gas systems | |
| CN102626585B (en) | V-type ammonia spraying and mixing system for SCR (Selective Catalytic Reduction) smoke denitrification device | |
| CN201179429Y (en) | Alkaline air, air mixer | |
| JP2010071240A (en) | Exhaust gas purifying device for internal combustion engine, and swirl flow generating device | |
| CN104963750A (en) | Static mixing device for SCR system of high-power diesel engine | |
| CN106268294A (en) | A kind of longitudinal Vortex type for SCR denitration system sprays ammonia mixing arrangement | |
| CN206429285U (en) | A kind of pipe-line mixer of SCR system | |
| CN108119211A (en) | A kind of close-coupled mixing arrangement for meeting six discharge standard of Europe | |
| WO2017084549A1 (en) | Mixer and mixing components thereof | |
| CN207786297U (en) | A kind of SCR denitration reactor is evenly distributed with the guiding device in flow field | |
| CN201244479Y (en) | Ejection apparatus and injection grille containing the ejection apparatus | |
| CN203886437U (en) | High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device | |
| CN108757125A (en) | A kind of improved selective catalytic reduction device suitable for boat diesel engine | |
| CN206184287U (en) | Board -like blender | |
| CN101342457A (en) | Flue gas denitrating whirling current mixer and whirling current mixing method | |
| CN101245726B (en) | SCR reprocessing piping device of large-duty engine | |
| CN206419086U (en) | A kind of sharp-angle type SCR blenders | |
| CN207970694U (en) | A kind of ammonia nitrogen mixing arrangement for apparatus of thermo-electric power boiler spray ammonia system | |
| CN209791285U (en) | Dynamic mixing device for SCR denitration system | |
| CN108097080A (en) | A kind of energy-efficient multiple pollutant removing bioactive molecule bispin flow jet device | |
| CN201543395U (en) | Dynamic mixing device for SCR denitration system | |
| CN202096879U (en) | Front secondary rectification static mixer of SCR (silicon controlled rectifier) denitration system | |
| CN206391869U (en) | A kind of SCR denitration system eddy flow chip static mixer | |
| CN205619368U (en) | Air heater deposition washing unit | |
| CN205252903U (en) | Spout ammonia mixing arrangement against current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |